Part A
AD8041AR
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5370 個数
- Package
- SOP-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Not a drop-in replacement
The AD8044ARZ-14 and AD8041AR are not drop-in replacements for one another. The AD8044ARZ-14 is a quad-channel device in a 14-lead SOIC package, while the AD8041AR is a single-channel device in an 8-lead SOIC package, so channel count, package footprint, and pinout differ fundamentally. Designers must redesign the board layout and adjust the surrounding circuitry rather than substitute one part directly for the other.
Different channel count
Different package footprint
Different pinout
Different supply current
Parts at a glance
Part B
AD8044ARZ-14
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6991 個数
- Package
- SOP-14
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8044ARZ-14 | AD8041AR | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 4 | 1 | Determines how many independent signal channels are available in a single package; a quad device cannot directly substitute for a single-channel design without layout changes. |
| -3 dB Bandwidth | 150 MHz | 160 MHz | Sets the maximum signal frequency the amplifier can pass with acceptable gain; affects high-speed signal fidelity and video/ADC driving capability. |
| Slew Rate | 170 V/µs | 160 V/µs | Governs how fast the output can respond to large signal steps; critical for pulse and high-frequency large-signal applications. |
| Supply Voltage Range | 3 V to 12 V | 3 V to 12 V | Defines the allowable power supply window; matching ranges allow the same rail voltages to be used in a replacement design. |
| Input Offset Voltage (max) | 8 mV | 8 mV | Represents DC accuracy error at the input; similar offsets mean comparable DC precision in signal conditioning chains. |
| Quiescent Supply Current per Amplifier | 3.4 mA | 3.4 mA | Affects total power consumption and thermal budget; per-amplifier current helps estimate system power when channel counts differ. |
| Package / Mounting | 14-Lead SOIC (Surface Mount) | 8-Lead SOIC (Surface Mount) | Footprint and pin count must match the PCB layout; different packages require board redesign and cannot be drop-in replaced. |
| Output Current (typical) | 50 mA | 50 mA | Indicates drive capability for loads such as cables and capacitive loads; matching values suggest similar load-driving behavior. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms environmental compatibility for industrial applications; identical ranges mean the same thermal environment can be supported. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8041AR | AD8044ARZ-14 |
|---|---|---|
| Part Status | Obsolete | Active |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 1 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 170V/µs | 190V/µs |
| -3 dB Bandwidth | 170 MHz | 160 MHz |
| Current - Input Bias | 1.2 µA | 2 µA |
| Voltage - Input Offset | 2 mV | 1.4 mV |
| Supply Current | 5.8mA | 11.5mA |
| Current - Output / Channel | 50 mA | 30 mA |
| Voltage - Supply Span(Min) | 3 V | 3 V |
| Voltage - Supply Span(Max) | 12 V | 12 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the main differences between the AD8044ARZ-14 and the AD8041AR?
The AD8044ARZ-14 is a quad, low-power, high-speed operational amplifier supplied in a 14-lead SOIC package, while the AD8041AR is a single, high-speed operational amplifier in an 8-lead SOIC package. The AD8044 integrates four amplifiers in one package, whereas the AD8041 contains one amplifier, so they differ in channel count, package pinout, and typical application density.
Are the AD8044ARZ-14 and AD8041AR pin-compatible?
No. The AD8044ARZ-14 uses a 14-lead SOIC package with four amplifiers, and the AD8041AR uses an 8-lead SOIC package with a single amplifier. Their pin counts, pin functions, and PCB land patterns differ, so they are not drop-in replacements for one another.
Can the AD8041AR be used as a substitute for one channel of the AD8044ARZ-14?
Functionally, the AD8041AR is a single high-speed operational amplifier and the AD8044ARZ-14 contains four such amplifiers, but substitution requires verifying supply voltage range, bandwidth, slew rate, output drive, and package footprint against the manufacturer datasheets. A direct board-level substitution is not possible because the packages and pinouts differ.
What supply voltage ranges do the AD8044ARZ-14 and AD8041AR support?
Both devices are designed for dual-supply operation typically in the ±5 V range, with datasheet-specified operating limits that should be confirmed on the official Analog Devices datasheets. Designers must verify the exact minimum and maximum supply voltages and the associated performance specifications before use.
How do the bandwidth and slew rate of the AD8044ARZ-14 and AD8041AR compare?
Both are high-speed operational amplifiers intended for video and signal-processing applications, and their bandwidth and slew rate specifications are defined in the respective Analog Devices datasheets. Because the AD8044ARZ-14 is a quad and the AD8041AR is a single, the designer should compare the datasheet parameters for the specific grade and package to confirm suitability for the target signal chain.
Which applications are better suited to the AD8044ARZ-14 versus the AD8041AR?
The AD8044ARZ-14 is suited to multi-channel designs that benefit from four matched amplifiers in a single 14-lead SOIC package, such as multi-channel video or signal-conditioning boards. The AD8041AR is suited to single-channel designs where an 8-lead SOIC package and one high-speed amplifier are sufficient, reducing board area and cost for low-channel-count applications.
Do the AD8044ARZ-14 and AD8041AR share the same operating temperature range?
Both are industrial-grade Analog Devices amplifiers, and the exact operating temperature range for each part is specified in its datasheet. Designers should confirm the rated temperature range and any grade-specific limits from the official manufacturer documentation before finalizing the design.